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Q11. Which statement about the NHRP network ID is true? 

A. It is sent from the spoke to the hub to identify the spoke as a member of the same NHRP domain. 

B. It is sent from the hub to the spoke to identify the hub as a member of the same NHRP domain. 

C. It is sent between spokes to identify the spokes as members of the same NHRP domain. 

D. It is a locally significant ID used to define the NHRP domain for an interface. 

Answer:

Explanation: 

The NHRP network ID is used to define the NHRP domain for an NHRP interface and differentiate between multiple NHRP domains or networks, when two or more NHRP domains (GRE tunnel interfaces) are available on the same NHRP node (router). The NHRP network ID is used to help keep two NHRP networks (clouds) separate from each other when both are configured on the same router. The NHRP network ID is a local only parameter. It is significant only to the local router and it is not transmitted in NHRP packets to other NHRP nodes. For this reason the actual value of the NHRP network ID configured on a router need not match the same NHRP network ID on another router where both of these routers are in the same NHRP domain. As NHRP packets arrive on a GRE interface, they are assigned to the local NHRP domain in the NHRP network ID that is configured on that interface. 

Reference: 

http://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.html 

Q12. Refer to the exhibit. 

Which additional information must you specify in this configuration to capture NetFlow traffic? 

A. ingress or egress traffic 

B. the number of cache entries 

C. the flow cache active timeout 

D. the flow cache inactive timeout 

Answer:

Explanation: 

Configuring NetFlow 

Perform the following task to enable NetFlow on an interface. SUMMARY STEPS 

1. enable 

2. configure terminal 

3. interface type number 

4. ip flow {ingress | egress} 

5. exit 

6. Repeat Steps 3 through 5 to enable NetFlow on other interfaces. 

7. end 

DETAILED STEPS 

Command or Action 

Purpose 

Step 1 

enable 

Example: 

Router> enable Enables privileged EXEC mode. . 

Enter your password if prompted. 

Step 2 

configure terminal Example: 

……..

Example: 

Router(config)# interface ethernet 0/0 

Specifies the interface that you want to enable NetFlow on and enters interface configuration mode. 

Step 4 

ip flow {ingress | egress} 

Example: 

Router(config-if)# ip flow ingress 

Enables NetFlow on the interface. 

. ingress—Captures traffic that is being received by the interface 

. egress—Captures traffic that is being transmitted by the interface 

Step 5 

exit 

Example: 

Router(config-if)# exit 

(Optional) Exits interface configuration mode and enters global configuration mode. 

Note 

You need to use this command only if you want to enable NetFlow on another interface. 

Step 6 

Repeat Steps 3 through 5 to enable NetFlow on other interfaces. 

This step is optional. 

Step 7 

end 

Example: 

Router(config-if)# end Exits the current configuration mode and returns to privileged EXEC mod 

Reference: http://www.cisco.com/c/en/us/td/docs/ios/netflow/configuration/guide/12_2sr/nf_12_2sr_boo k/cfg_nflow_data_expt.html 

Q13. Refer to the exhibit. 

Which two statements about the VPN solution are true? (Choose two.) 

A. Customer A and customer B will exchange routes with each other. 

B. R3 will advertise routes received from R1 to R2. 

C. Customer C will communicate with customer A and B. 

D. Communication between sites in VPN1 and VPN2 will be blocked. 

E. R1 and R2 will receive VPN routes advertised by R3. 

Answer: C,E 

Explanation: 

+ VPN1 exports 10:1 while VPN3 imports 10:1 so VPN3 can learn routes of VPN1. 

+ VNP1 imports 10:1 while VNP3 export 10:1 so VNP1 can learn routes of VPN3. 

-> Customer A can communicate with Customer C 

+ VPN2 exports 20:1 while VPN3 imports 20:1 so VPN3 can learn routes of VPN2. 

+ VPN2 imports 20:1 while VPN3 exports 20:1 so VPN2 can learn routes of VPN3. 

-> Customer B can communicate with Customer C 

Therefore answer C is correct. 

Also answer E is correct because R1 & R2 import R3 routes. 

Answer A is not correct because Customer A & Customer B do not import routes which are exported by other router. Customer A & B can only see Customer C. 

Answer B is not correct because a router never exports what it has learned through importation. It only exports its own routes. 

Answer D is correct because two VPN1 and VPN2 cannot see each other. Maybe in this question there are three correct answers. 

Q14. How many bytes comprise the system ID within an IS-IS NET? 

A. 4 bytes 

B. 6 bytes 

C. 8 bytes 

D. 16 bytes 

E. 20 bytes 

Answer:

Explanation: 

Routers are identified with NETs of 8 to 20 bytes. ISO/IEC 10589 distinguishes only three fields in the NSAP address format: a variable-length area address beginning with a single octet, a system ID, and a 1-byte n-selector. Cisco implements a fixed length of 6 bytes for the system ID, which is like the OSPF router ID. 

Reference: http://www.cisco.com/en/US/products/ps6599/products_white_paper09186a00800a3e6f.sh tml 

Q15. Refer to the exhibit. 

The two standalone chassis are unable to convert into a VSS. What can you do to correct the problem? 

A. Set a different port channel number on each chassis. 

B. Set a different virtual domain ID on each chassis. 

C. Set the redundancy mode to rpr on both chassis. 

D. Add two ports to the port channel group. 

Answer:

Q16. Which two configuration changes should be made on the OTP interface of an EIGRP OTP route reflector? (Choose two.) 

A. passive-interface 

B. no split-horizon 

C. no next-hop-self 

D. hello-interval 60, hold-time 180 

Answer: B,C 

Explanation: 

The EIGRP Over the Top feature enables a single end-to-end Enhanced Interior Gateway Routing Protocol (EIGRP) routing domain that is transparent to the underlying public or private WAN transport that is used for connecting disparate EIGRP customer sites. When an enterprise extends its connectivity across multiple sites through a private or a public WAN connection, the service provider mandates that the enterprise use an additional routing protocol, typically the Border Gateway Protocol (BGP), over the WAN links to ensure end-to-end routing. The use of an additional protocol causes additional complexities for the enterprise, such as additional routing processes and sustained interaction between EIGRP and the routing protocol to ensure connectivity, for the enterprise. With the EIGRP Over the Top feature, routing is consolidated into a single protocol (EIGRP) across the WAN. 

Perform this task to configure a customer edge (CE) device in a network to function as an EIGRP Route Reflector: 

1. enable 

2. configure terminal 

3. router eigrp virtual-name 

4. address-family ipv4 unicast autonomous-system as-number 

5. af-interface interface-type interface-number 

6. no next-hop-self 

7. no split-horizon 

8. exit 

9. remote-neighbors source interface-type interface-number unicast-listen lisp-encap 

10. network ip-address 

11. end 

Note. Use no next-hop-self to instruct EIGRP to use the received next hop and not the local outbound interface address as the next hop to be advertised to neighboring devices. If no next-hop-self is not configured, the data traffic will flow through the EIGRP Route Reflector. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/xe-3s/ire-xe-3s-book/ire-eigrp-over-the-top.html 

Q17. On a broadcast interface, which two OSPF states support BFD sessions? (Choose two.) 

A. DR 

B. BDR 

C. DROTHER 

D. 2WAY 

E. FULL 

F. ACTIVE 

Answer: A,B 

Q18. A floating static route appears in the routing table of an interface even when the interface is unusable. 

Which action can you take to correct the problem? 

A. Remove the permanent option from the static route. 

B. Correct the administrative distance. 

C. Configure the floating static route to point to another route in the routing table. 

D. Correct the DHCP-provided route on the DHCP server. 

Answer:

Q19. Which two statements about packet fragmentation on an IPv6 network are true? (Choose two.) 

A. The fragment header is 64 bits long. 

B. The identification field is 32 bits long. 

C. The fragment header is 32 bits long. 

D. The identification field is 64 bits long. 

E. The MTU must be a minimum of 1280 bytes. 

F. The fragment header is 48 bits long. 

Answer: A,B 

Explanation: 

The fragment header is shown below, being 64 bits total with a 32 bit identification field: 

Reference: http://www.openwall.com/presentations/IPv6/img24.html 

Q20. Refer to the exhibit. 

You are configuring the S1 switch for the switchport connecting to the client computer. Which option describes the effect of the command mls qos map cos-dscp 0 8 16 24 32 40 46 56? 

A. Voice traffic is excluded from the default priority queue. 

B. Voice packets are given a class selector of 5. 

C. Video conferencing is marked CS3. 

D. Voice packets are processed in the priority queue. 

Answer:

Explanation: 

The default CoS to DSCP mappings are shown below: 

Default CoS-to-DSCP Map 

CoS Value 

DSCP Value 

16 

24 

32 

40 

48 

56 

In our example, we see that COS 6 is mapped to DSCP, not the default of DSCP 48 as shown above. DSCP 46 is Expedited Forwarding (EF), which is typically used for voice traffic, and this value has not been included in this class map.